const char *netdev_get_name(const struct netdev *);
const char *netdev_get_type(const struct netdev *);
int netdev_get_mtu(const struct netdev *, int *mtup);
+int netdev_set_mtu(const struct netdev *, int mtu);
int netdev_get_ifindex(const struct netdev *);
/* Packet send and receive. */